Measurement-computing TempScan/1100 Manual de usuario Pagina 36

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1-22 System Overview 899493 TempScan / MultiScan User's Manual
Power-Up Activation
At initial power-up or on the Reset Power-On (*R) command, the TempScan/1100 or MultiScan/1200
performs automatic self-tests to ensure that it is fully functional. The front panel LED indicators show any
errors if they occur. Possible error conditions and their corresponding LED indicator patterns are shown in
the following table. Any LED pattern not shown is an internal error that is not field-serviceable; in this
case, contact the factory. If ERROR is on by itself, there is a configuration error due to setup information
in NV-RAM. Check the error using the Query Error Status (
E?) command.
LED Indicators
Error Condition
TALK LISTEN SRQ ERROR POWER
No Errors
(Off) (Off) (Off) (Off) ON
General Hardware Failure
ON
(Off) ON FLASHING ON
Position-U22 ROM Invalid
(Off) (Off) (Off) FLASHING ON
Position-U21 ROM Checksum Error
(Off) (Off) ON FLASHING ON
Position-U22 ROM Checksum Error
(Off) ON (Off) FLASHING ON
Non-Volatile RAM Error
ON
(Off) (Off) FLASHING ON
Dynamic RAM Error
ON ON
(Off) FLASHING ON
Interprocessor COM Error
ON ON ON FLASHING ON
If no problems are found, the POWER LED indicator will remain on while the rest of the indicators will go
out, and the TempScan/1100 or MultiScan/1200 will begin its power-up initialization. This self test is
performed each time the unit is powered up regardless of whether power-on was caused by the power
switch or the Reset Power-On (
*R) command. During initialization, the self test performs the following
steps:
1. Checks for errors at power-up.
2. Checks the flag in the NV-RAM to determine if it should power-up with factory default settings or a
user-defined configuration.
3. Loads appropriate registers with corresponding values in NV-RAM.
4. Checks a flag to see if alarms should be enabled at power-up, and if so, enables them.
5. Loads channel configuration registers.
6. Loads program sequencer with appropriate channel configurations.
7. Resets computations processor to begin acquiring scans.
The self test takes approximately five seconds to complete, after which the TempScan/1100 or
MultiScan/1200 unit is ready for normal operation.
For more information, see section Power-Up Configuration.
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